Skip to content

Petrol in Diesel

0333 366 0103

AdBlue in the Diesel Tank in Cornhill? Keep It Switched Off

AdBlue in your diesel tank? Then keep the engine off — and your ignition as well. Urea dissolved in water is what AdBlue is. Being water-based, it will not burn and never combines with diesel; damage just starts when the pump starts pulling it. If the motor has not run yet, AdBlue in a diesel tank is generally emptied and thoroughly cleaned where your car sits in Cornhill. Before anything, call us on 0333 366 0103.

Call 0333 366 0103

Those opening minutes: AdBlue in the diesel tank around Cornhill

Things to do:

  • Pocket the keys, and that prevents anyone switching the power on.
  • If you're at all close to moving traffic, put your hazards on.
  • The empty bottle or the till receipt tells us the product and the amount, and so do not bin it away.
  • Ring just where you are. Quote a AB16 5 postcode or the closest street sign, and no one has to hunt for you.

Things not to do:

  • Moving your vehicle even a short way is no reason to fire up the motor.
  • Many diesels run their fuel pump the instant your ignition goes on, and so keep the vehicle off.
  • No more fuel added. The AdBlue will not mix, and so it is wasted.
  • Any driving at all is best avoided, even a short stretch along Beechwood Avenue.
  • Don't try to drain the car yourself at the kerbside.

Rolling your vehicle off the pumps is a job for staff to help with, wherever Cornhill forecourt you're on, the Shell included. Parked on your own drive? Then it remains exactly where it is.

AdBlue in a diesel tank: what it does

Not the motor but your exhaust is where AdBlue is meant to go. Kept in a separate tank, it's squirted into the exhaust stream to clean the gases. Nothing in it is meant to pass through a fuel pump, and nothing in a fuel pump is designed to handle it.

Fuel mixes; AdBlue, after poured in, will not. The behaviour is not at all like fuel's. It's heavier than diesel, so it sinks and collects at the bottom of that tank, which is where the pickup pulls fuel from. A car filled on a driveway in Hilton yesterday evening and left unstarted counts as the straightforward case. No pump has pulled the AdBlue up so far — but when the engine turns, that is what goes first, straight from the bottom of your tank.

Once it is sucked in, the harm comes in two forms. It eats at some metals used in fuel components, attacking whatever it touches till it's removed completely. And once the water evaporates, the urea turns into crystals that clog filters and lodge in tiny channels. Lines carrying AdBlue mean harm overnight for a car sitting in Cornhill. Only inside the tank, it stays the same. The water in it causes damage of its own: the high-pressure pump and your injectors rely on diesel to lubricate them, and water gives them nothing.

Draining AdBlue from a diesel tank in Cornhill

Why AdBlue in a diesel is often more major than petrol

Put petrol in a diesel at the BOC and you have a problem of thin fuel. Damage just comes from driving on it. Mixed into your diesel and left inside the tank, it causes nothing.

With AdBlue in a diesel, the liquid as such is simply the wrong one. It can't just be run through, since it doesn't burn. It doesn't stay mixed, so it cannot be thinned. And crystals and corrosion don't wash out with the next tank of fuel. That's why the flush counts more with AdBlue than with petrol, and why starting your engine "to see" costs more here than nearly anywhere else, whether your car is in Mastrick or the middle of Cornhill.

With AdBlue, the good news is no different from petrol. Emptying a tank is the simplest part on any fuel system, and without start-up, the AdBlue stays in there — wherever across Aberdeen City your vehicle has stopped.

AdBlue in a diesel tank in Cornhill: how it ends up there

Nobody means to do it. The AdBlue filler on many cars sits right next to your diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Usually it's not the filling station: someone picks up a bottle driving home and pours it in at home.

Mostly, it occurs in one of a couple of familiar ways. The top-up gets rushed outside the local primary school, because your dash flashed with a warning as the children were taken in. In the evening, a container is tipped in on a driveway close to Foresterhill Road. Or someone unfamiliar with that flap tops up your vehicle after dark, stopped in the car park outside Croft and Cairns.

The least familiar vehicles see it the most — hire cars, new ones, company cars, and the spare vehicle of a home with both fuel types. Keep it off: that's the first step to the same slip, wherever in Cornhill or the rest of Aberdeen City you are.

AdBlue in your diesel tank in Cornhill, and the engine started?

The AdBlue has left your tank, then. Through your filter, through the pipework, and — given any running — into the high-pressure pump and every injector: that is where it travels.

Expect lumpy running, exhaust smoke, lost power, lights on your dash, or a cut-out — returning from Cornhill Park, say, or midway across Cornhill. Stop as soon as it is safe, switch off, and don't restart the vehicle to check. Every start pulls more of it through.

Leave the M90, over 50 miles from Cornhill, by the next junction and stop safely, not driving on.

Distance matters: each mile pushes the AdBlue deeper into the system, so heading for Aberdeen, under 3 miles away, makes a much larger job than hopping across Cornhill to the car park by Cornhill Shopping Centre. Roughly how far it had come is worth telling us.

Our technicians do all of the rinsing where your car has ended up, and once your engine has been started there is more of it. When it's noticed quickly, permanent damage is very uncommon.

What emptying AdBlue from a diesel involves around Cornhill

The car stays put, whether that's a street beside Cairncry Community Centre, a drive, a lay-by or a forecourt around Cornhill, and our van travels to it. Three answers decide the work, and so first our technicians ask which fluid went in, roughly the amount, plus if the motor has run.

Next, emptying the tank on the spot removes the polluted diesel along with the AdBlue in one go. With AdBlue, more so than with petrol, the flush matters: the whole system is flushed right through because residue will not wash away unaided. Next, the filter: flushed, or changed when it has to be. After that fresh diesel, and then a test of your vehicle. Most of these jobs are a half-hour visit once we arrive, if your engine has not run. The pumps are explosion-proof, safe on a busy forecourt and quiet enough to use outside a house at night.

Bleeding the fuel system with fresh diesel comes last. You head off as soon as our technicians have started the car, and it makes no difference whether the car is on a driveway around Cornhill or in a space at Aberdeen. Our technicians confirm it runs correctly on clean diesel before leaving. Our engineers do it all wherever the car has stopped, and it never needs to go to a workshop. You get a VAT invoice and an engineer report after that, which is what insurers ask for.

About Cornhill, for a moment

Cornhill is a suburban area in Aberdeen City, situated approximately 1.8 miles from Aberdeen city centre. Cornhill sits on the coastal fringe of the city, with an elevation of around 91 metres, and is characterised by predominantly flat-type housing. Cornhill is close to other nearby suburbs, including Stockethill, Rosehill, and Cummings Park. Cornhill has a population of around 5901 residents.

AdBlue drains across Cornhill and Aberdeen City

Over the AB postcode area, the teams answering AdBlue call-outs in Cornhill serve much of Aberdeen City too, Stockethill, Rosehill and Cummings Park included. Ring and ask instead of guessing if you're by a county line, or somewhere awkward to explain.

A mobile service fits Cornhill, a residential suburb: you have no need to take your vehicle to us, since our technicians empty it there, on a driveway, a residential street, a parking area or a forecourt.

What AdBlue in a diesel tank costs to put right around Cornhill

Since the callouts differ, a flat price would not be fair. Whether the motor has been running, and for how long, comes first in what shifts the price. How much AdBlue was put in comes next, and then the location of your car, because an open driveway is easier for our van to get to safely than a tight spot behind University of Aberdeen Medical Library.

Which fluid went in, what quantity, and whether the engine ran: each Cornhill call begins with precisely those, ahead of any figure, never afterwards. The answers turn a range into a straight quote.

You hear that quote by phone, before anyone heads out, and you pay on the day, by card or by phone, with nothing upfront. Plenty of insurance policies include misfuelling cover, so it's worth checking yours while we're on the way.

Beside your car in Cornhill, right now?

Right now, the best thing to do with your vehicle is to not touch it. Keys out, engine off, ignition off. Petrol in Diesel takes over the remainder, across Cornhill or anywhere within Aberdeen City, once you ring 0333 366 0103 to say it's AdBlue, about what quantity, and if the engine ran.

Call 0333 366 0103